Journal
JOURNAL OF NEUROSCIENCE RESEARCH
Volume 85, Issue 3, Pages 465-470Publisher
WILEY
DOI: 10.1002/jnr.21149
Keywords
fetal alcohol syndrome; cerebellar granule cells; Ca2+ signaling; cAMP-PKA signaling; cGMP-PKG signaling
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Funding
- NIAAA NIH HHS [AA13613] Funding Source: Medline
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Maternal alcohol consumption during pregnancy can cause serious birth defects, of which fetal alcohol syndrome (FAS) is the most devastating. Recognized by characteristic craniofacial abnormalities and growth deficiency, this condition produces severe alcohol-induced damage in the developing brain. FAS children experience ataxia; deficits in intellectual functioning; and difficulties in learning, memory, problem solving, and attention. Multiple aspects of central nervous system development can be affected by alcohol exposure, but the most striking abnormalities are neuronal and glial migration. Little is known about cellular mechanisms by which alcohol affects the migration of immature neurons. Recently, it has been found that Ca2+ signaling and cyclic nucleotide signaling are the central targets of the action of alcohol in neuronal cell migration. Most importantly, the aberrant migration of immature neurons caused by alcohol exposure is significantly ameliorated by controlling the activity of these second-messenger pathways. In this Mini-Review, we first describe how alcohol exposure impairs the migration of cerebellar granule cells and then discuss the signaling mechanisms involved. (c) 2006 Wiley-Liss, Inc.
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